I am installing the 32-bit version of the latest Linux Mint from my USB. I installed it and checked the "erase disk and install linux mint" because I do not want to use Windows. I am fairly experienced with linux itself, just not installing and all the PC stuff.
After installation, I clicked reboot and it brings up:
"BOOT MENU
1. Windows Boot Manager
2. eMMC Disk: Samsung 32GB"
What do I do from here?

You'll need to add the file "bootia32.efi" to /efi/BOOT/ (may or may not be capitalized on your install) and then you'll be able to use a 32-bit or 64-bit version of Mint. That file is easily found on the Web and it might be possible to upload it here, I haven't tried yet.

2GB is fine with KDE, Xfce & (presumably) MATE as long as you don't have too many things running; don't overdo fancy desktop effects & you should be fine for fairly basic use. Cinnamon is probably too heavy on resources.

I set mine up with 128MB /efi, 512MB /boot, about 3GB swap, 10GB / & the rest for /home. Rather limited but it works as long as you get rid of old kernels before /boot gets too full.